But as the call grew louder and louder, a liquid yodel came like an electric shock from a clump of bushes on the left.
"Ways of Wood Folk"
William J. Long
And now he joyously bounded down the hill, but soon moderated his step, and sang a yodel until the birds joined with him, and the echo repeated the song.
"Landolin"
Berthold Auerbach
An answering yodel came presently; Penrod Schofield appeared, and by his side walked Georgie Bassett.
"Penrod and Sam"
Booth Tarkington